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I have been looking at the CSS files for many websites like Facebook and Youtube.
In almost all of them I see this code:
* {
margin: 0;
padding: 0;
}
It is odd, as removing that block in chrome web developer tools doesn’t affect the layout of the page.
What does this code mean, and when is it used and why?
This is a common technique called a CSS reset. Different browsers use different default margins, causing sites to look different by margins. The
*means “all elements” (a universal selector), so we are setting all elements to have zero margins, and zero padding, thus making them look the same in all browsers.